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| author | Karl Williamson <khw@khw-desktop.(none)> | 2010-07-09 13:21:33 -0600 |
|---|---|---|
| committer | Steffen Mueller <smueller@cpan.org> | 2010-08-23 16:07:40 +0200 |
| commit | e99c83c053fe52ff17d870415b31d0a59f95955a (patch) | |
| tree | 41c233704d3f6cbe92c3637657b468b302bdaaf3 | |
| parent | e2ea3c5f9f6a1726b593f5948152c04b37c3d3c1 (diff) | |
| download | perl-e99c83c053fe52ff17d870415b31d0a59f95955a.tar.gz | |
perlpragma.pod: Clarify that runtime %^H is ro
You can use (caller(0))[10} to retrieve the contents of %^H, and any
changes you make to your local copy will be lost, but that may not be
immediately apparent to the pod reader.
| -rw-r--r-- | pod/perlpragma.pod | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/pod/perlpragma.pod b/pod/perlpragma.pod index 51292a8a12..856014438e 100644 --- a/pod/perlpragma.pod +++ b/pod/perlpragma.pod @@ -117,8 +117,8 @@ for the user's code. User pragmata store their state by writing to the magical hash C<%^H>, hence these two routines manipulate it. The state information in C<%^H> is -stored in the optree, and can be retrieved at runtime with C<caller()>, at -index 10 of the list of returned results. In the example pragma, retrieval +stored in the optree, and can be retrieved read-only at runtime with C<caller()>, +at index 10 of the list of returned results. In the example pragma, retrieval is encapsulated into the routine C<in_effect()>, which takes as parameter the number of call frames to go up to find the value of the pragma in the user's script. This uses C<caller()> to determine the value of |